EP1268103B1 - Procede de production d'elements a corps creux, element a corps creux, assemblage et matrice - Google Patents
Procede de production d'elements a corps creux, element a corps creux, assemblage et matrice Download PDFInfo
- Publication number
- EP1268103B1 EP1268103B1 EP01933778A EP01933778A EP1268103B1 EP 1268103 B1 EP1268103 B1 EP 1268103B1 EP 01933778 A EP01933778 A EP 01933778A EP 01933778 A EP01933778 A EP 01933778A EP 1268103 B1 EP1268103 B1 EP 1268103B1
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- European Patent Office
- Prior art keywords
- component
- section
- hollow body
- body element
- accordance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D53/00—Making other particular articles
- B21D53/24—Making other particular articles nuts or like thread-engaging members
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/64—Making machine elements nuts
- B21K1/66—Making machine elements nuts from strip bars
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/64—Making machine elements nuts
- B21K1/68—Making machine elements nuts from round or profiled bars
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/64—Making machine elements nuts
- B21K1/70—Making machine elements nuts of special shape, e.g. self-locking nuts, wing nuts
- B21K1/702—Clinch nuts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/04—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
- B23P19/06—Screw or nut setting or loosening machines
- B23P19/062—Pierce nut setting machines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B37/00—Nuts or like thread-engaging members
- F16B37/04—Devices for fastening nuts to surfaces, e.g. sheets, plates
- F16B37/06—Devices for fastening nuts to surfaces, e.g. sheets, plates by means of welding or riveting
- F16B37/062—Devices for fastening nuts to surfaces, e.g. sheets, plates by means of welding or riveting by means of riveting
- F16B37/068—Devices for fastening nuts to surfaces, e.g. sheets, plates by means of welding or riveting by means of riveting by deforming the material of the support, e.g. the sheet or plate
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49789—Obtaining plural product pieces from unitary workpiece
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49789—Obtaining plural product pieces from unitary workpiece
- Y10T29/49798—Dividing sequentially from leading end, e.g., by cutting or breaking
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49995—Shaping one-piece blank by removing material
Definitions
- the present invention relates to a method for producing hollow body elements like nut elements for attachment to commonly components made of sheet metal according to the generic term of Claim 1. Furthermore, the present invention relates to a Hollow body element according to the preamble of claim 15 and assembly parts, resulting from the attachment of the hollow body elements Components result and matrices that are used to attach the hollow body elements components are used.
- hollow body elements with an at least substantially square or rectangular External outline by cutting individual elements from one in the form of a profile bar or a coil Profile after punching holes in the profile and if necessary with subsequent formation of a threaded cylinder, wherein an enforcing process is carried out before or after the perforation of the profile is to be concentric to the perforation or by material flow provided cylindrical, oval, polygonal or annular perforation Projection on the side of the profile facing the component generate, hollow body elements produced in the known method according to US-A-2,206,740, which is considered in the preamble of claim 15 will, however, not become self-piercing in the component used, but this must be prepunched.
- US-A-3,999,659 also shows the production of rectangular elements from a profile, however, without the step of an enforcement process to produce an annular projection.
- Hollow body elements are known, for example, from US Pat. No. 4,971,499. Hollow body elements are also made by the company Profilstrahlsstechnik GmbH & Co. KG in Germany under the name HI rectangular nut sold.
- the object of the present invention is a method of the beginning mentioned type so that hollow body elements in particular Rectangular nut elements with inexpensive manufacture that have better mechanical properties, for example a higher pull-out force and improved security against rotation and also show a reduced notch effect, so that the fatigue properties of assembly parts consisting of a component usually made of sheet metal and attached to it Hollow body elements improved even under dynamic loads become.
- a profile is chosen as the profile that its side facing the component later two from each other Distance, parallel to the long sides of the profile and at least essentially rectangular bars in cross section has, which may additionally have a sawtooth pattern and in finished element form an anti-rotation feature and that the If necessary, then protrude into a further pressing process annular stamping section is formed.
- the manufacture from a profile either in the form of a profile bar or in the form of a wrap in which the profile is already the basic shape of the item allows it to be relatively expensive Eliminating cold-blow machines and instead allows production of the elements in a conventional stamping press that are made with a Progressive tool is equipped to the individual manufacturing steps perform. Manufacturing using a punch press a progressive tool is compared to the application cold impact machines are particularly cost-effective. The production on a transfer press is possible under the same conditions. The The separation process must be moved to the first stage.
- the invention provides that the hollow body element on two opposite Has sides extending parallel to each other with the form a component against rotation; that the annular projection is designed as a stamped section and that between the bars and there is a recessed area in the annular punching section, wherein preferably beams only on two opposite sides of the hollow body element are present and form contact surfaces for the component that are so great that the surface pressure is below the yield point of the component lies.
- Assembly parts consisting of a component according to the invention and an attached hollow body element according to the invention are in claims 23 to 25 defined.
- Figure 1 shows a perspective view of a first invention Profile 10, which for the production of hollow body elements according to the invention 11 (Fig. 4) can be used.
- Profile 10 is either in the form of a rod, for example 6 meters in length, or will supplied by the material manufacturer in the form of a wrap. It is a matter of a cold rolled profile.
- Preferred materials are all types of steel DIN 1654, but also non-ferrous metals such as aluminum or similar
- the profile is at least substantially rectangular in cross section also has two on the side 12 that will later face the component A spacing A from each other bars 14 and 16, which are parallel run to the longitudinal sides 18 and 20 of the profile 10 and in cross section are also substantially rectangular.
- One can change the shape of the profile also consider that it is at least essentially rectangular with a wide but not very deep groove 22 of substantially rectangular Cross section on the side facing the component 12, the Groove 22 also runs parallel to the long sides 18, 20 of the profile.
- FIGS. 2A-F all show a cross section (partially only for Half) through the profile 10 of Figure 1 perpendicular to its longitudinal direction L, the axis 24 in FIG. 2 corresponding to the axis 24 in FIG. 1 and is arranged perpendicular to the longitudinal extension L of the profile 10. Also the cross-sectional plane is perpendicular to the longitudinal direction L.
- the profile 10 runs in the longitudinal direction L in a with a progressive tool 26 ( Figure 3) equipped punch press 38, the progressive tool Has five stations for performing the in Fig. 2A-E shown steps.
- the first station is shown in cross section in FIG. 3 and serves the enforcement process according to FIG. 2B.
- a stamp 28 which comes from above in FIGS. 3 and 2B presses on the top 30 of the profile 10 and by means of a below the Profile bar 10 arranged die 32 (Fig. 3) a material flow locally in Profile 10 generated in the region of the axis 24, so that a cylindrical recess 34 in the top 30 of the profile bar 10 and a cylindrical Projection 36 is generated on the component side 12 of the profile bar 10.
- the volume of the cylindrical recess 34 corresponds to the volume 36 of the cylindrical projection.
- FIG. 3 shows a partially sectioned illustration a first station of a progressive tool 26, which in a Punching press 38 is arranged, only a part of the punching press and one Part of the progressive tool is shown.
- plate 42 may be one Act the intermediate plate of the punch press.
- the profile 10 is supported on all sides in the press.
- the lower tool 40 has a receiving or support plate 48, which receives the die 32 and two further plates 50 and 52 supports, which are arranged to the left and right of the profile 10 are.
- the plates 50 and 52 form a guide through which the profile bar 10 in a direction perpendicular to the plane of the drawing step for Step can be moved.
- the hold-down device 46 which by means of shown, supported on the upper tool 44 spring pressed down is in contact with the tops of the plates 50 and 52 and with the top 30 of the profile 10.
- the hold-down 46 has a cylindrical opening in the form of a stepped bore 54, through which the stamp 28 extends through and thus with its front end 56 can come into contact with the top 30 of the profile 10.
- the upper end of the punch 28 is held in the upper tool 44 and is with the compensating pressure piece 58 of the upper frame plate 42 Press down during the closing movement of the press until it 3 has reached the position, and thus the cylindrical projection 36 is formed.
- the shape of the cylindrical projection is determined by the shape of the die 32. This consists of an outer Part 60, which via a pressure piece 62 on the lowest plate 41 of the Tool 40 is supported and thus against the lower plate (not shown) of the press immovable since the plate 41 of the tool 40 attached to the lower plate of the press.
- the outer part 60 of the die has a protrusion 64 which is U-shaped Groove 22 in the bottom of the profile 10 in the area of this station of the progressive tool and a middle circular Has bore 66 into which the material of the profile can flow locally, to form the ring projection 36.
- the projection 64 has a height to correspond to the depth of the U-shaped groove 22 and is also present the inner side surfaces 68, 70 of the two beams 14 and 16 of the profile 10.
- the die 32 also has a centrally arranged, cylindrical Post 72 on, the upper end face 74 in Fig. 3 part of the bottom of the cylindrical projection 36 is supported.
- the face of the post 72 can be slightly spherical and a small amount above of the cylinder 76 lie to the subsequent transformations of the Support Profile 10.
- the post 72 is immovable and on his supported on a plate 62.
- the post 72 is located also within a cylinder arranged concentrically to it 76, which is also supported at its lower end on the pressure piece 62 and has a cylindrical annular surface at its upper end, which lies in one plane with the upper end face 74 of the post 72 and with this the lower limit for the by the effect of Stamp 28 forms formed cylindrical projection 36.
- a movable pressure piece 84 which is concentric through a stepped bore 82 in this arranged spring 86 is biased upwards.
- the upper tool 44 moves with the punch 28 and out of phase with the hold-down 46 away from the plates 50 and 52 and the force of the spring 86 is then sufficient to about the Pressure piece 84 and the pins 88 the cylindrical part 76 of the die move upwards so that its upper annular end face 78th lies flush with the upper side of the projection 78 and the profile 10 is raised so that the cylindrical projection 36 no longer is deepened in the die, but above the die itself located so that it can be transported to the next station of the progressive tool (not shown).
- the plates 50 and 52 horizontally moved apart via a slide system on the side, in order to be able to lift the profile 10 more easily.
- the progressive tool has in the second station basically the same design as in the Drawing on Fig. 3, only the middle post 72 has on his a top shape corresponding to the bowl 92 and protrudes around the axial depth of the cup above the upper end face 78 of the cylindrical Part 76 of the die emerges. It may be possible to complete the training of the bowl simultaneously with the production of the cylindrical projection 36 to achieve. However, this is not preferred since the Formation of the bowl at the same time the shape of the cylindrical projection 36 corrected so that this has a precisely defined sharp training in Has area of edge 100.
- the profile is lifted out of the die again and transported one step further to the station where the perforation according to FIG. 2D.
- this station is similar 3, only the middle post 72 and the are missing here Instead, the station has a hole that provides a sewer for disposal the punching slug 96 forms.
- the profile is again lifted out of the corresponding die and one more Step transported to a station where the expanding process was carried out is so that the cylindrical projection 36 takes the shape that in 2E is shown.
- the lower face of the cylindrical Projection 36 is provided with a conical depression 102 has been formed, which forms a chamfer, the cone shape towards the free Face 104 of the cylindrical projection 36 diverges.
- the middle post 72 is the middle post 72 in the area of its upper end provided with a corresponding conical chamfer.
- a free space is provided in the area of the outer die 60 (not shown), so that in the formation of the conical recess 102 the outer side wall 106 of the cylindrical projection 36 which is conical downward diverging shape according to FIG. 2E and thereby an annular undercut 108 around the ring projection 36 is formed around.
- the profile 10 is removed from the The die is lifted out, again through a cylindrical part of the die similar to part 76 and the profile goes one step further transported to a last station of the progressive die, where a section of the profile with the length of the element 11 according to FIG. 4 is cut off.
- the element made in this way with perforation 98 is now transported in a device where in a manner known per se Thread 110 is drilled according to FIG. 2F.
- the hollow body element is left without thread.
- the perforation 98 could be thought of as a guide or for receiving an insertion part are formed.
- the one in the area of his forehead-causing end has a diameter which is at least substantially that Diameter of the punch for performing the punching process equivalent.
- the diameter is the annular recess 34 then the same size as the diameter of the subsequent Perforation 98 so that the area of the recess 34 is part of the threaded cylinder and the height of the element accordingly can be lower. Since the cylindrical projection 36 the 2B and the volume of the cylindrical projection 36 corresponds to the volume of the cylindrical recess 34, falls the axial length of the cylindrical recess 34 due to the smaller Diameter of the punch 28 larger, so that the thickness of the area of the profile which are perforated during the punching process according to FIG. 2D must be smaller and the punching process is easier, so that the Wear on the punch becomes less.
- a nut element 11 is formed with the shape according to the figures 4A to 4F.
- the corresponding reference numerals from the previous figures are entered here and are in accordance with the previous description to understand so.
- FIG. 4B specifically shows the cross section through the nut element 11 4A at the section plane B-B
- FIG. 4C shows the cross section perpendicular to it corresponding to the section plane C-C
- the figure 4D shows a perspective view of element 11 from FIG right side and from the front when looking obliquely downwards
- Figure 4E is a perspective view of the Mother element 11 shows from the bottom.
- Figure 4F gives the concrete dimensions of the element when that Thread is designed for an M6 screw. According to the representation 4F corresponds to the left half of the cross-sectional drawing of the left Side of Fig. 4B, while the right half of the sectional drawing according to Fig. 4F half the cross section of the element 11 in the direction of the longitudinal direction L corresponds to the original profile.
- FIG. 5 now shows an assembly part consisting of the element according to FIG Fig. 4 after attachment to a component 13 in the form of a Sheet metal part.
- the sheet in the area of the bottom 12 of the Element 11 is molded into the recess around the ring projection 36 around inside the U-shaped groove 22 between the beams 14 and 16 is formed.
- the sheet metal engages in the undercut 108 around the cylindrical projection 36 so that here a positive Engagement takes place and the element 11 in the axial direction 24 without the application no longer removed from the sheet metal part 13 by destructive forces can be.
- By molding the sheet metal of component 13 into the U-shaped one Groove 22 between the bars 14 and 16 prevents that Element 11 can be rotated relative to component 13, i.e. the Element is able to withstand any torsional forces caused by the introduction of a screw into the thread 110 could arise.
- the die 114 essentially has one cylindrical, circular shape, but is on one side with a Provide flattening 116, which serves as a shape feature that a correct Ensures orientation of the die in the tool. Because it is required that the projection 118, rectangular in outline, be on the strinside 120 of the die aligned with the U-shaped groove 22 of the element 11 is. This correct alignment or orientation, i.e. to the The axis 25 of the die is aligned with the axis 24 of the element Attachment must be aligned using the flattening 116 ensured. The elements must also be used in the attachment Have the correct orientation around the axis 24, which is easily guaranteed by the known setting heads can be.
- the component 13 For the attachment of the element 11 on the component 13 is usually the component 13 is positioned in a press, the element 11 is from a setting head and coming from above placed on the component 13 and that Component 13 is supported on the other side on the face of the die.
- a hold-down initially moves of the setting head in a manner known per se against the upper side 122 of the Sheet metal part 13 and presses it into abutment on the end face 120 of the die.
- the setting head then moves the element 11 against the top 120 of the Sheet metal part, the central axis 24 of the element 11 coaxial to the middle axis 25 of the die is positioned.
- the lead 118 of the die then presses the sheet metal part into the U-shaped groove 22 and the annular nose 126 of the die, which is slightly above the Protruding plateau areas 128 in the four corners of the projection 118, presses the sheet metal of the component 13, in the edge area by punching out of the punching slug created hole 112, in the recess around the ring projection 36 and at the same time deforms the sheet material so that there is an annular recess 130 in the sheet metal part and that Sheet material flows into the annular undercut 108.
- a press to attach element 11 to component 13 to achieve a robot or other tool can be used who holds the element in the correct position relative to the die and applies the necessary force.
- FIG. 7 now shows how a further component 132 by means of a screw 134 can be screwed to the component 13.
- the further component 132 is namely attached to the side of the component 13, that of the element 11 faces away, the thread 136 of the screw 134 into the thread 110 of the element 11 engages.
- the contact surface 138 of the screw, or a possibly provided disc expresses this additional component 132 to the component 13 so that the component 13 between the bars 14 and 16 of the element and the further component 132 clamped becomes.
- the axial height of the ring projection 36 is in the axial direction 24 chosen so that they are a rich system of the other component. 132 does not prevent component 13, i.e.
- the cylindrical projection 36 protrudes by a maximum of the sheet thickness of component 13 over the underside of the beams 14 and 16. With this construction, one becomes extraordinary high security against rotation achieved. Furthermore, the screw 34 pulls it Element firmly against the sheet metal part 13, so that an axial separation of this two parts in the axial direction 24 is not possible.
- the profile 210 in FIG. 8 also has an essentially rectangular shape Cross-section, in contrast here in the component side 212 of the profile 1 two grooves 223 and 225 by one Cold rolling process are formed, each rectangular cross sections and parallel to the long sides 218 and 220 of the profile 210 extend so that two bar-shaped areas 214 and 216 are also formed here become.
- the profile 210 according to FIG. 8 is made in a punch press using a progressive tool similar to the progressive tool described so far processed to produce mother element according to Figures 9A to 9E.
- the ring projection 326 in the middle of the end face of the die 314 is here circular in plan view, the manufacture of the ring projection 326 to respective arcuate cutouts 250 and 252 in the two bars 246 or 248 leads.
- the axial height of the ring projection on the die 314 is thus larger in this embodiment than in the die according to FIG 6A-C, since it protrudes directly from the front side 320 and not how 6A-C from a rectangular projection protrudes.
- the edge area 112 around the punch hole in Sheet metal part is in this embodiment in the conical recess 240 pressed around the cylindrical projection 236 and is simultaneously molded into the undercut 308 where the flow of the sheet material into this undercut 308, is improved by the annular projection 326 of the die, which leads to a annular recess 330 in the sheet metal part around the cylindrical projection 236 leads around.
- a further component 332 is attached here in a manner similar to that of 7 using a screw 334, here also the further component 332 on that facing away from the element 311 Side of component 313 is attached.
- the element has a very large contact area for the component 313, since the grooves 223 and 225 and the Ring depression 240 in terms of area a smaller proportion of the underside of element 311 occupy than in the previous embodiment the case is.
- element 311 can be the same Support area are dimensioned somewhat smaller than with the element is the case according to the first embodiment, so that thereby Weight saving is achieved.
- the profile 410 has a middle area 417 with an at least substantially rectangular Cross section on and left and right of integral wings 419 and 421, which extends beyond the central region 417 on the component side 412 extend and there form two bars 414 and 416 that are parallel to the longitudinal sides 420 of the profile and over an oblique depression 423 or 425 in the underside of the central area 417 of the profile pass.
- the upper sides 427 and 429 of the two wings 419 or 421 a clear distance from the upper side 430 of the middle area 417 of profile 410 and thereby form shoulders, which are at an angle to the side walls of the central area and enclose with each other an angle ⁇ related to that of the component side 412 opposite side 430 of the profile is slightly smaller than 180 ° and is, for example, in the range from 175 ° to 160 °.
- the underside of beams 414 and 416 are corresponding to the shoulders 427 and 429 slanted, i.e. form the same angle ⁇ with each other.
- the sloping transition areas 423 and 425 are also parallel to the inclined surfaces formed by the shoulders 427 and 429, so that they also form a corresponding angle ⁇ with one another.
- This Tilting of wings 419 and 421 in relation to the middle area 417 is done by manufacturing the profile 410 by cold rolling and has a special advantage that will be explained later.
- the shape of the profile 410 is essentially that of the embodiment 1 and the production of nut elements from the profile 410 in principle takes place in the same way as the production of the 4 as previously described with reference to Figures 2 and 3.
- the manufacturing process is therefore not here Discussed in detail.
- FIGS. 14A to 14E which the Show nut element in the finished form and from the ones used there Reference numerals that this element is very similar to the element 4A to F.
- cylindrical projection 436 has no undercut, but this is not absolutely necessary and the ring projection 436 have the same shape could be like the corresponding annular projection 36 of the embodiment 4.
- the functional elements described here can, for example, include all Materials are manufactured that have strength class 5.6 or higher to reach. Such metal materials are usually carbon steels with 0.15 to 0.55% carbon content.
- the functional elements are all materials that are mentioned in the frame the cold forming the strength values of class 8 according to the Isostandard achieve, for example a 35B2 alloy according to DIN 1654.
- the so Fasteners formed are suitable, among other things. for all standard Steel materials for drawable sheet metal parts as well as for aluminum or their alloys.
- Functional elements also come from high-strength magnesium alloys such as AM50 in question.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Forging (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Punching Or Piercing (AREA)
- Insertion Pins And Rivets (AREA)
Claims (29)
- Procédé pour fabriquer des éléments creux (11 ; 211 ; 411), comme des éléments d'origine à fixer sur des pièces détachées (13 ; 213 ; 413) habituellement en tôle, en particulier pour fabriquer des éléments creux avec un contour extérieur au moins substantiellement carré ou rectangulaire, par tronçonnement d'éléments individuels à partir d'un profilé (10 ; 210 ; 410) se présentant sous la forme d'une barre profilée ou d'un rouleau après un découpage préalable de trous respectifs (98 ; 298 ; 498) dans le profilé, et le cas échéant, avec formation consécutive d'un cylindre taraudé (110 ; 310 ; 510), dans lequel une opération de traversée est effectuée avant ou après la perforation du profilé afin de générer par écoulement de matière une saillie cylindrique ou annulaire (36 ; 236 ; 436), concentrique par rapport à la perforation (98 ; 298 ; 498) ou à la perforation prévue, du côté du profilé (12 ; 212 ; 412) tourné vers la pièce détachée,
caractérisé en ce que
comme profilé (10 ; 210 ; 410), on choisit un profilé qui présente sur son côté (12 ; 212 ; 412) ultérieurement tourné vers la pièce détachée deux barres (14, 16 ; 214, 216 ; 414, 416) présentant un espacement l'une par rapport à l'autre, s'étendant en parallèle aux côtés longitudinaux (18, 20 ; 218, 220 ; 418, 420) du profilé et de section au moins substantiellement rectangulaire, les barres pouvant en outre présenter un motif en dents de scie et constituer une caractéristique anti-torsion dans l'élément fini (11 ; 211 ; 411), et en ce que la saillie (36 ; 236 ; 436) est le cas échéant façonnée ensuite au cours d'une opération de pressage supplémentaire en une découpe annulaire. - Procédé selon la revendication 1, caractérisé en ce que l'opération de traversée est réalisée en ce qu'au niveau de la saillie à générer, le profilé (10) prend appui sur une matrice (32) avec un renfoncement (66) d'une forme complémentaire à la forme de la saillie (36) souhaitée et est retenu sur l'ensemble des zones latérales restantes dans un outil correspondant (46, 48, 50, 52, 60), et en ce qu'un poinçon (28) est poussé dans la matière du côté (30) du profilé (10) détourné de la saillie annulaire pour générer le flux de matière à l'intérieur du renfoncement (66) de la matrice (32).
- Procédé selon la revendication 2, caractérisé en ce que le poinçon (28) présente un diamètre extérieur qui correspond au moins substantiellement à la saillie (36) souhaitée.
- Procédé selon la revendication 2, caractérisé en ce que le poinçon présente un diamètre extérieur qui correspond au moins substantiellement au diamètre de la perforation restant à générer.
- Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que dans une étape supplémentaire, une opération d'emboutissage est effectuée sur la face avant exposée de la saillie annulaire afin de générer un bord de rupture (94) pour la débouchure de poinçonneuse (96) lors de la perforation consécutive.
- Procédé selon la revendication 5, caractérisé en ce qu'après l'opération d'emboutissage l'élément est perforé à l'aide d'un perforateur et d'une matrice adéquate, dans lequel le perforateur est guidé de façon concentrique par rapport au godet (92) généré par l'opération d'emboutissage.
- Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce qu'après la perforation, une opération d'évasement est effectuée pour munir la saillie perforée (36 ; 236) d'une paroi extérieure (106 ; 306) de forme au moins substantiellement conique et divergeant en direction de sa face avant libre.
- Procédé selon la revendication 7, caractérisé en ce que lors de l'opération d'évasement, un renfoncement conique (102, 302, 502) formant une face de dépouille est généré de façon concentrique par rapport à la perforation (98) dans l'extrémité avant libre de la saillie, le renfoncement divergeant également en direction de la face avant de la saillie annulaire.
- Procédé selon la revendication 7 ou 8, caractérisé en ce que le tronçonnement de l'élément à partir du profilé (10, 210, 410) a lieu après l'opération d'évasement.
- Procédé selon l'une quelconque des revendications 7 ou 8, caractérisé en ce que l'opération d'évasement a lieu comme une étape de calibrage après le tronçonnement de l'élément respectif à partir du profilé.
- Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que les étapes respectives sont effectuées sur une presse à découper (36) en utilisant un outil progressif composé (26).
- Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce qu'en section, le profilé (410) présente une zone centrale (417) au moins substantiellement rectangulaire, et à gauche et à droite de celle-ci, des ailes (419, 421) intégrées à celle-ci, les ailes s'étendant au-delà de la zone centrale du côté pièce détachée (412) et y formant deux barres (414, 416) qui s'étendent en parallèle aux côtés longitudinaux (418, 420) du profilé et passent par un renfoncement oblique (423, 425) à la face inférieure de la zone centrale du profilé, les faces supérieures (427, 429) des ailes étant nettement espacées par rapport à la face supérieure de la zone centrale du profilé et formant ainsi des épaulements qui sont placés de façon oblique par rapport aux parois latérales de la zone centrale et forment ensemble un angle (α) qui est légèrement inférieur à 180° par rapport au côté du profilé détourné du côté pièce détachée, situé par exemple dans la plage de 175° à 160°, les ailes placées de façon oblique étant aplaties lorsque l'élément est fixé sur une pièce en tôle (413).
- Procédé selon l'une quelconque des revendications 1 à 11, caractérisé en ce que comme profilé (210), on choisit un profilé qui présente au niveau des côtés longitudinaux (218, 220) du côté (212) ultérieurement tourné vers la pièce détachée (213) des rainures (218, 220) dont les côtés tournés vers les côtés longitudinaux délimitent les barres (214, 216) du côté intérieur tourné vers la saillie (236).
- Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que comme profilé (10 ; 210 ; 410), on choisit un profilé laminé à froid.
- Elément creux (11 ; 211 ; 411) à fixer sur une pièce détachée en particulier en tôle, dans lequel l'élément creux présente une perforation (98, 298, 498) disposée de façon centrale et s'étendant perpendiculairement au côté (12 ; 212 ; 412) de la pièce détachée, la perforation pouvant le cas échéant présenter un cylindre taraudé (110 ; 310 ; 510), et une saillie annulaire (36 ; 236 ; 436) existe du côté (12 ; 212, 412) tourné vers la pièce détachée de l'élément creux et de façon concentrique à la perforation,
caractérisé en ce que
l'élément creux présente des barres (14, 16 ; 214, 216 ; 414, 416) s'étendant en parallèle l'une à l'autre sur deux côtés opposés, les barres formant avec la pièce détachée un dispositif anti-torsion ; en ce que la saillie annulaire (36 ; 236 ; 436) est réalisée comme une découpe, et en ce qu'entre les barres et la découpe annulaire, il existe une zone renfoncée (22 ; 240 ; 422), dans lequel des barres existent de préférence uniquement sur deux côtés opposés de l'élément creux et forment des surfaces d'appui pour la pièce détachée qui sont suffisamment grandes pour que la pression superficielle se situe au-dessous de la limite d'écoulement de la pièce détachée. - Elément creux selon la revendication 15, caractérisé en ce que du côté pièce détachée de l'élément creux, l'extrémité avant (104 ; 304 ; 504) de la saillie annulaire (36 ; 236 ; 436) dépasse plus que les barres (14, 16 ; 214, 216 ; 414, 416).
- Elément creux selon la revendication 15 ou 16, caractérisé en ce que la zone renfoncée (22 ; 422) entre les barres est de contour extérieur au moins substantiellement rectangulaire, et en ce que la saillie annulaire (36 ; 436) est disposée au milieu du renfoncement et présente sur tous les côtés un espacement par rapport à la limite du renfoncement.
- Elément creux selon l'une quelconque des revendications 15 ou 16, caractérisé en ce que les deux barres (214, 216) s'étendant en parallèle l'une à l'autre sur des côtés opposés de l'élément creux sont délimitées ou constituées par deux rainures (223, 225) s'étendant également en parallèle l'une à l'autre, qui présentent au moins substantiellement une section rectangulaire, et en ce que le renfoncement annulaire (240) est un renfoncement conique qui est réalisé dans le côté pièce détachée (212) de l'élément creux dans la zone entre les deux rainures, le renfoncement conique divergeant en direction du côté pièce détachée (212).
- Elément creux selon la revendication 18, caractérisé en ce que du côté (230) détourné du côté pièce détachée (212) de l'élément creux (211) il existe un épaulement annulaire conique (242) d'une forme approximativement complémentaire au renfoncement annulaire conique (240) dans le côté pièce détachée de l'élément.
- Elément creux selon la revendication 15, caractérisé en ce qu'en section, il présente une zone centrale (417) au moins substantiellement rectangulaire, et à gauche et à droite de celle-ci, des ailes (419, 421) intégrées à celle-ci, les ailes s'étendant au-delà de la zone centrale du côté pièce détachée (412) et y formant deux barres (414, 416) qui s'étendent en parallèle aux côtés longitudinaux (420) du profilé et passent par un renfoncement oblique (423, 425) à la face inférieure de la zone centrale du profilé, les faces supérieures (427, 429) des ailes étant nettement espacées par rapport à la face supérieure de la zone centrale du profilé et forment ainsi des épaulements qui sont placés de façon oblique par rapport aux parois latérales de la zone centrale et forment ensemble un angle (α) qui est légèrement inférieur à 180° par rapport au côté du profilé détourné du côté pièce détachée, par exemple situé dans la plage de 175° à 160°.
- Elément creux selon l'une quelconque des revendications 15 à 20, caractérisé en ce que la découpe annulaire (36 ; 236 ; 436) présente une paroi extérieure au moins substantiellement conique qui diverge en direction de l'extrémité avant libre (104 ; 304 ; 504) de la découpe et forme ainsi avec l'extrémité avant une arête d'estampage (100 ; 300 ; 500), la paroi extérieure s'étendant de façon conique de la découpe annulaire formant avec le renfoncement (108 ; 308) une contre-dépouille qui est conçue pour recevoir un matériau de tôle.
- Elément creux selon l'une quelconque des revendications 15 à 21 -, caractérisé en ce que l'extrémité frontale de la découpe annulaire présente un renfoncement conique (102) formant un chanfrein qui diverge en direction de la face frontale libre de la découpe.
- Pièce d'assemblage, composée d'une pièce détachée (13 ; 213 ; 413) et d'un élément creux (11 ; 211 ; 411) fixé sur celle-ci selon l'une quelconque des revendications précédentes 15 à 22, caractérisée en ce que la pièce détachée est façonnée dans la contre-dépouille (108 ; 308) formée par la découpe annulaire et façonnée dans la zone renfoncée (22 ; 240, 223, 225 ; 422) de façon adjacente auxdites barres, et en ce que l'élément creux est ainsi verrouillé avec la pièce détachée de façon protégée contre l'extraction et la torsion.
- Pièce d'assemblage selon la revendication 23, caractérisée en ce que la pièce détachée (13 ; 213 ; 413) présente dans la zone autour de la découpe annulaire (36 ; 236 ; 436) un renfoncement annulaire (130 ; 230 ; 530).
- Pièce d'assemblage selon la revendication 23 ou 24, caractérisée en ce que les surfaces d'épaulement (427, 429) de l'élément, qui forment d'abord ensemble un angle inclus (α) inférieur à 180°, sont au moins substantiellement aplaties dans la pièce d'assemblage, de manière à ce que les faces intérieures des barres (414, 416) forment une contre-dépouille et les bords intérieurs sur la face inférieure des barres présentent un espacement mutuel inférieur à celui avant la fixation sur la pièce détachée (413), de manière à améliorer l'engagement positif entre la pièce détachée et l'élément creux (411).
- Matrice pour fixer un élément creux selon l'une quelconque des revendications 15 à 22 sur une pièce détachée, caractérisée en ce que la matrice présente sur sa face avant libre (120 ; 520), tournée vers la pièce détachée, une saillie moulée (118 ; 518) au moins substantiellement rectangulaire en vue de dessus et en contour extérieur, la largeur de la saillie correspondant à l'espacement entre deux barres (14, 16 ; 414, 416) de l'élément creux (11 ; 411) moins deux fois l'épaisseur de pièce détachée et sa longueur correspondant à la longueur de l'élément (11 ; 411) en parallèle aux barres, et en ce qu'à l'intérieur du contour rectangulaire de la saillie, celle-ci présente une saillie annulaire (126 ; 526) qui provoque une transformation de la pièce détachée en une contre-dépouille formée autour de la découpe de l'élément creux et présente un alésage central (124 ; 524) qui coopère avec une découpe annulaire (36 ; 436) de l'élément creux pour créer une débouchure de poinçonneuse à partir de la pièce détachée lorsque l'élément creux est fixé sur la pièce détachée.
- Matrice selon la revendication 26, caractérisée en ce que la matrice est circulaire en vue de dessus, mais présente un repère d'orientation (116 ; 516) à un ou plusieurs endroits sur la circonférence extérieure, le repère servant à fixer un outil en position correcte.
- Matrice, en particulier pour une utilisation avec un élément creux avec deux rainures côté pièce détachée qui s'étendent en parallèle l'une à l'autre et forment des barres, caractérisée en ce que
la face avant (320) de la matrice est munie de deux saillies de type barre (246 ; 248) s'étendant en parallèle l'une à l'autre sur sa face avant tournée vers la pièce détachée, les saillies de type barre présentant une largeur maximale qui correspond au moins substantiellement à la largeur des rainures en forme de U (223, 225) de l'élément creux moins deux fois l'épaisseur de la pièce détachée et ayant une longueur qui correspond au moins substantiellement à la longueur des rainures en forme de U, et en ce que la matrice présente entre les barres une saillie annulaire qui provoque une transformation de la pièce détachée en une contre-dépouille formée autour de la découpe de l'élément creux et présente un alésage central (324) qui coopère avec une découpe annulaire (236) de l'élément creux pour créer une débouchure de poinçonneuse à partir de la pièce détachée lorsque l'élément creux est fixé sur la pièce détachée. - Matrice selon la revendication 28, caractérisée en ce que la matrice est circulaire en vue de dessus, mais présente un repère d'orientation (316) à un ou plusieurs endroits sur la circonférence extérieure, le repère servant à la fixation en position correcte dans un outil.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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EP04010488A EP1442809B1 (fr) | 2000-03-31 | 2001-03-29 | Procédé de production d'éléments à corps creux |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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DE10016227 | 2000-03-31 | ||
DE10016227 | 2000-03-31 | ||
PCT/EP2001/003614 WO2001072449A2 (fr) | 2000-03-31 | 2001-03-29 | Procede de production d'elements a corps creux, profil utilise dans ce procede, element a corps creux, composant d'assemblage et matrice |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
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EP04010488A Division EP1442809B1 (fr) | 2000-03-31 | 2001-03-29 | Procédé de production d'éléments à corps creux |
EP04010488.7 Division-Into | 2004-05-03 |
Publications (2)
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EP1268103A2 EP1268103A2 (fr) | 2003-01-02 |
EP1268103B1 true EP1268103B1 (fr) | 2004-10-06 |
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EP01933778A Expired - Lifetime EP1268103B1 (fr) | 2000-03-31 | 2001-03-29 | Procede de production d'elements a corps creux, element a corps creux, assemblage et matrice |
EP04010488A Expired - Lifetime EP1442809B1 (fr) | 2000-03-31 | 2001-03-29 | Procédé de production d'éléments à corps creux |
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EP04010488A Expired - Lifetime EP1442809B1 (fr) | 2000-03-31 | 2001-03-29 | Procédé de production d'éléments à corps creux |
Country Status (8)
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US (2) | US7090451B2 (fr) |
EP (2) | EP1268103B1 (fr) |
JP (1) | JP4881530B2 (fr) |
AU (1) | AU2001260170A1 (fr) |
BR (1) | BR0109724A (fr) |
DE (3) | DE50112173D1 (fr) |
ES (2) | ES2283898T3 (fr) |
WO (1) | WO2001072449A2 (fr) |
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USD451375S1 (en) * | 2000-05-11 | 2001-12-04 | Yugenkaisha Shinjo Seisakusho | Clinch nut |
USD451376S1 (en) * | 2000-05-11 | 2001-12-04 | Yugenkaisha Shinjo Seisakusho | Clinch nut |
USD451791S1 (en) * | 2000-05-11 | 2001-12-11 | Yugenkaisha Shinjo Seisakusho | Clinch nut |
USD450236S1 (en) * | 2000-05-11 | 2001-11-13 | Yugenkaisha Shinjo Seisakusho | Clinch nut |
USD452140S1 (en) * | 2000-05-11 | 2001-12-18 | Yugenkaisha Shinjo Seisakusho | Clinch nut |
DE20205192U1 (de) * | 2002-04-03 | 2002-11-07 | Profil Verbindungstechnik Gmbh | Profil zur Herstellung von Hohlkörperelementen, Hohlkörperelement sowie Zusammenbauteil |
-
2001
- 2001-03-29 ES ES04010488T patent/ES2283898T3/es not_active Expired - Lifetime
- 2001-03-29 JP JP2001570396A patent/JP4881530B2/ja not_active Expired - Fee Related
- 2001-03-29 EP EP01933778A patent/EP1268103B1/fr not_active Expired - Lifetime
- 2001-03-29 EP EP04010488A patent/EP1442809B1/fr not_active Expired - Lifetime
- 2001-03-29 DE DE50112173T patent/DE50112173D1/de not_active Expired - Lifetime
- 2001-03-29 DE DE50103988T patent/DE50103988D1/de not_active Expired - Lifetime
- 2001-03-29 WO PCT/EP2001/003614 patent/WO2001072449A2/fr active IP Right Grant
- 2001-03-29 ES ES01933778T patent/ES2225539T3/es not_active Expired - Lifetime
- 2001-03-29 AU AU2001260170A patent/AU2001260170A1/en not_active Abandoned
- 2001-03-29 DE DE10115420A patent/DE10115420A1/de not_active Withdrawn
- 2001-03-29 US US10/240,070 patent/US7090451B2/en not_active Expired - Lifetime
- 2001-03-29 BR BR0109724-5A patent/BR0109724A/pt active Pending
-
2005
- 2005-11-03 US US11/267,695 patent/US7387575B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
ES2225539T3 (es) | 2005-03-16 |
JP2003529451A (ja) | 2003-10-07 |
DE50112173D1 (de) | 2007-04-19 |
AU2001260170A1 (en) | 2001-10-08 |
EP1442809B1 (fr) | 2007-03-07 |
WO2001072449A3 (fr) | 2002-04-25 |
US7090451B2 (en) | 2006-08-15 |
DE50103988D1 (de) | 2004-11-11 |
WO2001072449A2 (fr) | 2001-10-04 |
ES2283898T3 (es) | 2007-11-01 |
EP1442809A3 (fr) | 2004-09-08 |
DE10115420A1 (de) | 2001-10-04 |
US20060053612A1 (en) | 2006-03-16 |
EP1442809A2 (fr) | 2004-08-04 |
BR0109724A (pt) | 2003-02-04 |
EP1268103A2 (fr) | 2003-01-02 |
JP4881530B2 (ja) | 2012-02-22 |
US20030145448A1 (en) | 2003-08-07 |
US7387575B2 (en) | 2008-06-17 |
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